CVE-2022-4994
In the Linux kernel, the following vulnerability has been resolved: KVM: x86: wean fast IN from emulator_pio_in Use __emulator_pio_in() directly for fast PIO instead of bouncing through emulator_pio_in() now that __emulator_pio_in() fills "val" when handling in-kernel PIO. vcpu->arch.pio.count is guaranteed to be '0', so this a pure nop. emulator_pio_in_emulated is now the last caller of emulator_pio_in. No functional change intended.
Affected versions
Linux kernel versions
4.10
and later are affected. Fixed in
6.0
and their respective stable series.
References
1 totalFrequently asked questions
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What is CVE-2022-4994?
CVE-2022-4994 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 4.10 onward and has been patched in 6.0. CVE-2022-4994 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2022-4994?
Yes. CVE-2022-4994 has been patched. Fixed versions include 6.0. If you are running Linux kernel 4.10 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2022-4994 actively exploited?
No. CVE-2022-4994 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.